This phones sensors is not working. im just using j2 6 and install a compas app in phone and start the app and unable to use a compas, message display that "your device not support sensors compas. Cant use the application and also send message is unable message will be sent affter connecting to network for a lot many days and due ton this is am not able to send SMS I thought this is my device problem but now I think this is a mobile problem samsung should fix this problem on the next software update I asked samsung customer support to sort this out. hope problem will be solve.